Type-writing machine.



E. B. BARNEY. TYPE WRITING MACHINE.

- APPLIUATION FILED MAB. 171909. 954,912. Patented Apr. 12,1910.

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,IIIIIIIIIIIIII'IIIIJ WITNEEEEE:

. INVENTDR.:

1||5 ATTURNEY E. E. BARNEY.

TYPE WRITING MACHINE. APPLICATION FILED MAB. 17, 1909.

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v WITNEEEEE: INVENTUR;

UNITED STATES PATENT OFFIOE.

EDWIN E. B ARNEY, F SYRACUSE, NEW YORK, .ASSIGNOR TO THE MONARCH TYPE-WRITER COMPANY, 0F SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Apr. 12, 1910.

To all whom if may concern:

3e it known that I, EDWIN E. BARNEY, a c'itlzen of the Unit-ed States,Vand resident of Syracuse, in the county of Onondaga and '5 State of NewYork, have invented certain new and useful Improvements in Type-VVrltlng Machines, of which the following is 'a specification.

My invention relates to typewriting machinos and more particularly t-ofractional platen of a typewliting machine having my4v inventionembodied therein, 'part of the carnage being also shown 'and parts being2 5 broken away, and the clutchv shown in nor- `mal orclutchingposition. Fig. 2 is a simil lar View ofthe en d of the platen on whichthe line space wheel is 'mounted and some of' the connected' parts, but-showing the clutch in released position. Fig. 3 is an isometricview'of. one of the platen heads.

@is a face View of the line space Wheel Fig.

Aan the Adogs and wedges ofthe clutch.

F igs. 5 and 6 are fragmentary front views.-l s howlngtheoperatingdevices for the platen clutch, Fig. 5 showing the parts innormal or clutching position and Fig. 6 showing the.

'parts in released position. Fig. 7 is a fraglin entfary. view`in section on the line --mlof 40 131g. 5 and look-ing inthe direction of the.

arrow at said line. In this figure the parts .are shown in full linesYin normal position and broken linesin operated or releasing position.Fig. 8 is a fragmentary topview vpartly 1n irregl'i-larLsection and.with 'parts brekenewar My invention is a to various stylesof tpewritingmachines 5 0 I' have' he're shown it applied to a" Monarchtypewrlter-iandtq a-'platen clutchA like that shown in the Britishpatentv to-'Fell No. 28,219'of 1906. The laten. clutch shown in.said-*Blgitish patent,;; ike most 'other platen My inventionconsists'in certain features.

plicable or adaptable and to .various'so'rts o platen clutches, butVclutches, is operated to 'release the platen f from the line space wheelby moving' a part longitudinally' of the platen axle. It is one of thepurposes of the present invention'to make certain improvements indevices for ope-rating these clutches by a lever or other devicel thatis mounted in the platen .frame and situated in a. more convenientposition than these longitudinally movable parts and that moves inanother direction and will .be automatically retained in either of thepositions to which it' is set, thus leaving the hands of the operatorfree to turn the platen orto adjust the paper or to dowliatever else maybe necessary while the clutch is disconnected. Operating devices thathave -to be moved by hand longitudinally of the platen, have usuallyinvolved a .divided platen axle orl some modificationof the bearingsorsupports of the platen,.vvh ich tend to complicate the mechanism andto weaken important parts of said mechanism. In

'some fhrms of these platen clutches thev llilaten'knob or finger wheelitselfA is movable longitudinally; in others the platen shaft by'meansof the fingerv wheel. If the knob that has to be pushed is situated atthe left-handend ofthe platen, then, when said knob is operated, thereis a liability to move the platen backward infletter space` direc tion.One of the purposes of my invention is to operate the platen clutchbymeans n ot open to 'any of these several objections.

The carriage of the Monarch typewriter comprises two end pieces orbrackets ..1 and 2which support the platen 3, Said platen Vis providedwith a shaft 4 whiclris journaled in bearing bushings 5 which passthrough -suitable.openings in the bracketsl and 2 where they are rigidlysecured by set screws (i. The platen is' provided with 'a4 right-handplaten head? which is rigidly fixed tothe shaft 4 by means of a setscrew,.8'. In this machine the line space Wheelrv is at the left-hand end ofthe platen and the left-hand platen head J has the linefspace.

wheel 10 mounted thereon. The platen heads are secured to the woodencore of' the platen' -by Wheels 4*. The left-hand face of the platenhead 9 is formed with three projections havingbearing surfaces -14 onwhich the lin'e space wheel bears `in such-fash1onthatwhen' the clutchis released the line Wheel and 'platen headare free "to `turn the onewith .relation tothe other! Ulf-he line space wheel has an internalilanf in which internal V- shaped teeth 15 aredrmed and itis the points' ofthese teeth thatr'ide on the bearing surfaces 111. Three rectangularra'- dial openin 1 6 between'the projections 13,' serre as guide-waysfor dogs 17 which-are niounted. 1nv` said openings I0tooth-p1'8vadaptedto'enter the notches be tween the teeth of the linespace Wheel. These dogs are? normally lpressed `1nto engagement with theteethgl by means of 4Wedges 2O Which'ar'e seated in holes 21 formed'longitudinally of; the platen in, anv

. inwardextension 220i the platen head 9. The AWedges .20 are pressedtoward the left 4.space wheel can more than one ofthe teeth- 1, 8bebottomed in 'one' of theI notches. be-

tween theteeth 15.` In Figa'1 the fparts'areV shown'in-suchapositinthatone 'Lof'fsaid teeth V18 is pressed tothe 4bottoni Offene ofVthe notches. When theplaten and'line space v 3.5y Wheel vhappentooee'upy this jrelatiye ..1 posi.'-

tion it wil lone ofthe teeth 15'1'11 Suche .wey-as to prel 1.64 `withjfreedom to slide radially in and out, Eachl of theseV dogs has at itsouter end a chisel or V-shaped bycoiled s rings 23v oorx'ipressedbetween the: Hbottoms o the 'holes 21 and the ends of the thecorresponding dogl'?. -The :spacing of bev noted 'that onefof-v..the:other teeth 18 is pressedIgsug'ainst onefofthejfteethy d "1 5 insuch away as to-preyent relative mo# .-tion ofthe line spa'ce `Wheelandplaten'in one direction and the third'tooth` 1Sen'gage`s r'e'taining said linespace wheel in position. The line .s ace wheel 10 may havev crownratchet' teet 1'0., whieh are engaged by the Y line space pawl 28nd'also by the-'usual de-v tentrollerv29. j f 70 .-*InorderV to releasethe 'platen clutch, a sleevejSOis sldably mounted on the shaft 4: tdthejgleft` of the platen head 9'al1d4` this Sleveiat its right hend endis enlarged'into a 'disk 30l which is adapted to engageY leftward4prolongations 31 .of-'the Wedges 20' so :thatwhen the disk is movedltoward the right it pushes all of said wedges toward the wed es,leaving 'said dogs free to move in- 8"'0 War toward the shaft 4 to asuieient-extent to release them from theteeth 15. The disk '30? isvformedwith' an internal coned sur-'1 vface 32 which, when said diskis'mo'vedto- Ward the` right, is -znapted'ftov engage' inclined surfaces33 formed on the toes of the. dogs 17 the constrdctionbeing such thatthe coned surface 32 earns vthe dogs v17 positively inward out ofengagement Withthe'teeth 15.

The retaining Y"plate 2 5-fis? formed with a -cup Shaped part34he`Yi1gf-an -intigirnedlan e, 35., '-Seid cnpsjhapedfpartj;recei'fsresft e enlarged innepdisk-:likeend of the sleeve.

a positionsv s vown 1 reventggniotlon of thej platen s V :relatively totie -l'ineispa'cerwheel infone-di-f h rection` andatle'astone-ofpvsaidfte'ethwill l V preventirelative mo'tionffof -Vthe-pperts vinthe@ other direction; so-that said 'linspace ndYits-flso hes i uter'foldo'ffthe'spifin 3 4with 'freedom -to'rektahout '1 u right and vreleases the dogs 17 from said t l' Shown in Fig. by the tension of thespring 36 but when the lever is pulled toward the front of the machineit cams said spring 36 toward the right and said spring carries thesleeve 30 with it toward 'the right, thus releasing the clutch. I prefernot to have the cam 41 act directly onv the sleeve 30 which sleeverotates with the platen and I have therefore interposed between the camand sleeve the forward end of the spring which is a part mounted in theplaten frame with freedom to move longitudinally of the,

platen,'and which is held against turning with the pla-ten.v The upperpart of the cam edge 41erniiiiatesin a dwell and a rounded stop portion45. The cam part of the lever has its left-hand edge 46 straight andthis straight part of the lever contacts with .the boss 1EL on thebracket 1 or with the end of the bushing 5 so that the lever is notcramped in its bearing on the nut 38. As the upper part of the cam edge41`is a dwell, the lever 42 will remain in the position shown in Fig. 6until it is pushed back by hand so that when the platen clutch isreleased itA will. remain in released position until restored to normalposition by moving Athe handle 4 3 toward'tlie rear of the machine.

The present invention isan improvement i on the construction forming thesubjectmatter of the application of Jacob Felbel, filedl March 1st,1909, Serial No. 480,548. By` pivoting the handle and cam back of oreccentric to the platen shaft I am enabled to give a longer throw to thecam for a given extent of motion of the free end of the handle than inthe prior construction. This enables me to use a cam having a moregradual inclination than in said prior construction, with the result`that the cam operates with less friction. Moreover, I have reduced thenumber of rubbing surfaces which also reduces the friction. The

construction as a whole works with the apyplication of much less power;and the andle, on` its return stroke, snaps back when.Y only lightlystruck by the hand of the operator, thus saving time in restoring theclutch.

. It will be noted that when the arts are in normal position the spring36 is out of contact with the end of the sleeve 30. This allows a slightlost motion between the spring and the sleeve which gives the handlewill also be understood that various changes lever 42 is normallyl heldin the position l operation. It will, of course, be understood that thedevices described may be readily applied oi adapted to other forms ofplaten clutch tliaii that shown in tliedrawings.' It

may be made in the details of construction and arrangement withoutdeparting fromk my invention.

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a rotary platen, a linespace wheel, a releasable clutch normally locking said line space `Wheeland platen to turn together, a handle pivoted to the platen frame at adistance from the platen axle and having its pivotal axis parallel tothe axis of the platen so as to move iii a plane transverse to theplaten axis for re easing said clutch, and means intermediate saidhandle and said clutch for'traiismitting ,motion from said handle tosaid clutch. i

2. In a typewriting machine, the combination of a rotary platen, a linespace Wheel for said platen, a releasable clutch for normally causingsaid platen and line space wheel to turn together, a handle arranged tobe operated in a plane transverse to the platen axis, a part mountedonthe platen frame forv motion longitudinally of the platen and operatedby lsaid handle, and means operated by said part for moving a part ofsaid clutch longitudinally of the' platen in oi'der to release saidclutch.

3, In a typewriting machine, the combi- 100 nation of a rotary platen,a. line space Wheel for said platen,l a releasable clutch for normallycausing said platen and line lspace wheel to` turn together, aliandle'ar- .trically of the platen axis'and operated by said handle formoving a partof said clutch longitudinally of the platen in order torelease said clutch.

4. In a typewriting machine, the combination of a platen, a line-spacewheel for said platen, a releasable clutch connecting said line s acewheel and platen, a device mounted directly-oli the platen frame andfree to move endwise of the platen but held aga-inst turning about thelaten axis, means operated by said vdevice or releasing said clutch,anda handle mounted in the lplaten frame for operating said device.

5. -In a typewriting machine, the combination of a platen, a line spacewheel for said platen, -a releasable clutch connecting -said line spacewheel and platenta device mounted directly on the platen frame and freeto Vmove endwise of the platen but held against turning about the latenaxis, means operated by said device or releasing said clutch, and ahandle mounted in the platen frame for operating said device, therebeing lost motion between said clutch and said endwisemovable device.

"6. In a typewriting machine, the combination of a platen, a line spaceWheel for said platen, a releasable clutch connecting said line spaceWheel and platen, means for releasing said clutch comprising a partmovable endwise of the platen, and means for` operating said releasingmeans including a plate spring and a cam movable transversely of theplaten and operating said sprmg. 1

7. In a typewriting machine, the combination cfa platen, a line spaceyvheel for saidfplaten, a releasable clutch connecting said line spacewheel and platen, means for' releasing said clutch comprising a partmovable endwise of the platen, and means for operating said releasingmeans including a plate spring and a cam movable transversely ofthe`platen and operating said spring, the tension of said spring beingeX- erjted on 4said cam to hold said handle in normal position.

8. In a typewriting machine, the combination of a platen, a line spaceWheel for n said platen, a releasable clutch connecting said line spaceWheel and platen, a handle i ysaid line space Wheel and platen, asleeveslidable longitudinally of the platen shaft for releasing said clutch, aplateelile part mounted directly7 on the platen frame and embracing saidplaten shaft and adapted to operate said sleeve, means preventing saidplate-like part from turning with the platen, a handle mounted in theplaten vframe, and

mea-ns operated by said handle to move said plate-like partlongitudinally of the platen to release the clutch.

Signed at Syracuse, in the county ot Onondaga and State of New York this13th day of March A. D. 1909.`

EDWIN yE. BARNEY.

Vitnesses:

G. B. BRAND, W. C. HAY.

